If everything is sterile, how will our immune systems get any practice? | Hacker News

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		astrofinch on Jan 14, 2011 \| parent \| context \| favorite \| on: Spray-on liquid glass is about to revolutionize al... If everything is sterile, how will our immune systems get any practice?

Sapient on Jan 14, 2011 [–]

Spray-on glass isn't going to make this situation much worse than it already is.

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